| 产品特性：比例控制 | 类型：比例阀 | 材质：铸钢 |
| 型号：4WRE6E16-1X/24K4/M | 品牌：Rexroth/力士乐 | 类型（通道位置）：先导式 |
| 连接形式：法兰 | 驱动方式：电磁 | 加工定制：否 |
| 适用范围：机械设备制造 | 产品别名：比例换向 | 适用介质：油品 |
| 适用温度：80℃ | 公称压力：25MPa | 公称通径：50mm |
| 安装形式：板式 | 工作温度：常温 | 零部件及配件：阀体 |
| 流动方向：单向 | 形态：针式 | 压力环境：常压 |
| 主体材料：铜 |
博士力士乐比例方向阀R900377131 4WRE6E16-1X/24K4/M液压阀
力士乐比例方向阀
4WREE6W32-2X/G24K31/A1V
4WREE6E32-2X/G24K31/A1V
WRA6W20-1X/24Z4/M
4WRAE10W60-2X/G24N9K31/F1V
带集成式放大板比例阀
首先，比例阀必须有一个配套的放大器，它接受来自于计算机，或者PLC，或者电位器（滑动变阻器）的控制信号，把0-20毫安微弱的信号放大到0-800毫安。计算机的信号太弱了。
然后，放大器把放大的信号传送到电磁阀度，电磁阀依据传来的信号大小，克服弹簧力，调节推杆的行程，输出流量大约知1升/分钟,压力随信号变化的控制油。
再后，控制油到达主阀芯的两端，依据不同的压力，推动阀芯移动相应的行程，因为阀芯本身有锥度的台阶，与阀体组合，不同的行程得到不道同的过流面积，再入版口压力稳定的情况下，得到不同的流量。最终实现比例功能。
比例阀是由计算机（或其他），放大器，比例电磁铁，锥度台阶的阀芯，入口压力补偿阀（单联可以不要），梭阀，内置卸荷阀（把多余的流量送回油箱）等构成的一个完整的体权系。才能真正实现比例功能。
4WRA 4WRAE 比例阀
4WRE 4WREE 比例方向阀
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力士乐比例方向阀
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博士力士乐比例方向阀R900377131 4WRE6E16-1X/24K4/M液压阀
